Yamaha YMC-700 Service Manual page 77

A B C
DIGITAL 3/8
1
Q Q
7
3
2
to DIGITAL 2/8
3
to DIGITAL 4/8
to DIGITAL 5/8
4
5
to DIGITAL 5/8
T E
to DIGITAL 4/8 L 1 3 9 4
to DIGITAL 5/8
6
to DIGITAL 4/8
7
to DIGITAL 5/8
8
to DIGITAL 5/8
9
to DIGITAL 3/8
w w w
.
10
D E F
1 5 1
6 3
0
0.5
0.2
0.4
0
3.3
0
0
0
0
0
0.4
0.3
0.3
0
3.3
0
3.3
0
0
0
0
3.1
2 2 9 6 5 1 3
0
3.3
0
3.3
3.3
0
0.4
1.3
0.3
3.1
No replacement part available.
1.4
0
0.2
0
0.2
1.9
0.2
3.3
0.2
0.2
0.3
1.8
3.3
0
0
0
1.3
0
C
IC334
1.8 1.6 1.6
IC334 IC334
1.8 1.6
3.3 3.3 POINT C XL331 (Pin 1 of IC334)
IC334 IC334
0 0
x a o
y
i
http://www.xiaoyu163.com G H
YMC-700 YMC-500
5
0 8
to DIGITAL 2/8
0
1.3
0
0
0
0
0
0
0
0
0
3.3
0
0
0
0
0
0
FPGA
0
0
3.3
0
0
Q Q 0
3 7 6 3
0
1.7
IC331
1.8
1.8
1.8
0
3.3
0
0
3.3
3.3
3.3
1.3
0
3.3
0
0
0
0
0
0
0
0
3.3
0
3.3
3.3
0.7
u 1 6 3
.
I J K
2 4
9 9
1.3 3.3
1.3
1.3 1.3
0
1.3
1.3
1 5 1 5 0 8 9 2
to DIGITAL 5/8
to DIGITAL 1/8
to DIGITAL 6/8
to DIGITAL 5/8
to DIGITAL 1/8
IC332
SDRAM
m
c o
L M N
YMC-700/YMC-500
2
8 9 9
to DIGITAL 4/8
1.3 2.5
IC333
2.5
0
2.5
3.3
0
4 9 8 2 9 9
IC332: M12L64164A-5TG
VDD 1 54 VSS
1M x 16-bit x 4 banks synchronous DRAM
DQ0 2 53 DQ15
3 52
VDDQ VSSQ
DQ1 4 51 DQ14
DQ2 5 50 DQ13
CLK 6 49
Clock VSSQ VDDQ
Generator Bank D DQ3 7 48 DQ12
CKE
Bank C 8 47
DQ4 DQ11
Bank B
VDDQ 9 46 VSSQ
Address Row DQ5 10 45 DQ10
Address 11 44
DQ6 DQ9
Buffer
VSSQ 12 43 VDDQ
Mode Bank A
& DQ7 13 42 DQ8
Register
Refresh 14 41
VDD VSS
Counter
LDQM 15 40 NC
16 39 UDQM
WE
Sense Amplifier CAS 17 38 CLK
L(U)DQM RAS 18 37 CKE
CS Column
19 36
Address Column Decoder CS NC
A13 20 35 A11
RAS Buffer
A12 21 34 A9
&
22 33
Refresh A10/AP A8
CAS
Counter A0 23 32 A7
Data Control Circuit DQ
A1 24 31 A6
WE
A2 25 30 A5
A3 26 29 A4
27 28
VDD VSS
IC333: R1172S121D-E2-F
IC334: 74LVC3GU04DP
Triple inverter Voltage regulator
1A 1 8 Vcc
V DD 6 1 V OUT
3Y 2 7 1Y
2A 3 6 3A
GND 4 5 2Y
Vref
Current Limit
CE 3 2,5 GND
Pin No. Symbol Description
1 VOUT Output Pin of Voltage Regulator
2, 5 GND Ground Pin
3 CE Chip Enable Pin
4 NC No Connection
6 VDD Input Pin
★ All voltages are measured with a 10MΩ/V DC electronic voltmeter.
★ Components having special characteristics are marked
and must be replaced
with parts having specifications equal to those originally installed.
★ Schematic diagram is subject to change without notice.
77